PHP 8 reference · String Functions

PHP ucfirst() Function

Make the first character of a string uppercase and leave the rest as it is. Only ASCII letters change.

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Syntax

ucfirst(string $string): string

Parameter	Description
`string`	The input string.

The string with its first character uppercased.

Capitalize the first letterTry it yourself

<?php
echo ucfirst("hello world"), "\n";
echo ucfirst("iPhone"), "\n";

Output

Hello world
IPhone

Normalize a nameTry it yourself

<?php
$name = "mARY";
echo ucfirst(strtolower($name)), "\n"; // lowercase first for a clean result

Output

Mary

Version	Change
PHP 4.0	Added

lcfirst() · Make the first character of a string lowercase, leaving the rest unchanged. Handy for turning PascalCase into camelCase.
ucwords() · Uppercase the first letter of each word in a string. By default words are separated by spaces, tabs and new lines.
mb_ucfirst() · Make the first character of a string title case, including letters such as é or ı. Added in PHP 8.4.
strtolower() · Convert every ASCII letter in a string to lowercase. Since PHP 8.2 it ignores the locale; use mb_strtolower() for é, Ü and others.
PHP Strings · tutorial